YETI

The Young Experimentalists and Theorists Institute aims to promote interaction between the two halves of the PP community at the early career stage and encourage interest in phenomenology. The YETI aims to give a pedagogical introduction to a particular area of topical interest in particle physics. A key feature are the hands-on sessions in the afternoons.

Each YETI has a different theme:

YETI'05 made the link between analysing from current collider experiments and the challenge of new physics at the LHC. The meeting emphasised a more informed approach towards Monte Carlo event generators and included hands-on sessions involving the MADGRAPH and Herwig generators.

YETI'06 took the form of two meetings: Beyond the Standard Model physics in particular SUSY. Topics for discussion included: a bottom up approach to the MSSM and its parameters, SUSY breaking scenarios and limit setting/interpretation. These sessions were supplemented with computing classes using the packages SOFTSUSY and ISASUSY. Using these tools participants were able to explore the relations between GUT scale SUSY parameters, like m0, m1/2, and electroweak scale sparticle spectra and decays. Event generators. The vast majority of postdocs and students in collider physics use Monte Carlo event generators in their everyday work. Despite this we identified that essentially no formal training is available regarding this topic and so we sought to address the matter. The workshop involved a set of introductory lectures given by Professor Torbjorn Sjostrand, author of the well-known PYTHIA event generator, as well as other, more specialized talks, by leading experts in the field.

The theme of YETI'07 was the statistical treatment of data with the emphasis on methods used for the analysis of small samples, e.g. confidence intervals and limit setting.

YETI'08 focussed on what has been learned at the Tevatron, and how that will impact on the LHC, by reviewing various aspects of the experimental measurements, such as the importance of the trigger, the jet energy scale, the missing transverse momentum measurement and diffractive production as well as extracting physics with bottom quarks and the top quark analysis. On the theory side, we reviewed Higgs and supersymmetric Higgs phenomenology, (particularly the differences between the MSSM and the NMSSM), other exotic Higgs models, tools for studying supersymmetry and discussed the differences between different models with extra dimensions.

In 2009 we revisited this topic and YETI'09 provided updates on the status and commissioning of the four main LHC experiments, as well as discussing the early measurements that will be made. In anticipation of subsequent discoveries at the LHC, we also eviewed tools for Beyond the SM models at the Tevatron and the LHC.

The 2010 YETI school, titled "A Window to the Dark World, from Cosmology to the LHC" aimed at connecting modern ideas in cosmology with particle physics, topics included large scale structure formation, the high-energy universe, the cosmic microwave background, dark matter, and finding its candidates at the LHC.

The topics at 2011 YETI titled "The Standard Model at the Energy Frontier" included a review of the first experimental results from the LHC, and discussion of current and new physics ideas related to the LHC.""

YETI 2012 was titled "Decoding Electroweak Symetry Breaking" and focused on various aspects related to the anticipated discovery of the Higgs boson or similar phenomena in alternative models of electroweak symmetry breaking.

YETI 2013 was titled "Higgsistence, understanding a 125GeV signal" and focused on understanding the properties of the newly discovered Higgs boson.

YETI 2014 was entitled "NU flavours" and focused on neutrino and flavour physics.

YETI 2015 was entitled "Cosmic Insights" and focused on astroparticle physics and cosmology.

The topic of YETI 2016 was "Prospects and Challenges for LHC Run II", and focused on theoretical and experimental issues in Higgs physics, top physics, flavour physics, and Beyond the Standard Model.

YETI 2017 addressed Gravity and its different manifestations. Following the outstanding success of the detection of gravitational waves by LIGO, the school studied various aspects of Gravity as opportunities and challenges for probing fundamental physics.

YETI 2018 asked "What has the LHC ever done for us?". Searches for beyond the standard model phenomena at colliders and the interesting phenomena of flavour physics were reviewed and explored